Road scraper



A. KERN, JR

ROAD SGRAPER 2 Sheets-Sheet 1 Filed Jan V15, 1941 Inventor Dec. 23,1941. A. KERN, JR 2,267,699

ROAD 5 CRAPER Filed Jan. 15, 1941 2 Sheets-SheetZ Inventor A framePatented Dec. 23, 1941 UNITED STAT ES PATENT OFFlCE,

9 Claims.

The present invention relates to new and useful improvements in scrapingattachments for road graders and has for its primary object to provide ascraper blade adapted for detachably mounting in advance of the machineand embodying means for raising the blade out of road scraping positionfrom the drivers seat or control cab and also embodying novel means forsecuring the blade in oppositely inclined positions forselectivelythrowing the loose material toward either side of the machine.

A still further object is to provide a scraper attachment of thischaracter of simple and practical construction, which is efficient andreliable in performance, relatively inexpensive to manufacture andinstall in operative position and otherwise well adapted for thepurposes for which the same is intended.

Other objects and advantages reside in the details of construction andoperation as more fully hereinafter described and claimed, referencebeing had to the accompanying drawings forming part hereof, wherein likenumerals refer to like parts throughout, and in which Figure l is a sideelevational view of the scraper shown in position at the front end of atractor or other road machine,

Figure 2 is a front elevational view,

Figure 3 is a fragmentary rear elevational view,

Figure 4 is a fragmentary sectional View taken substantially on a line44 of Figure 2,

Figure 5 is a vertical sectional view through one of the guides forraising and lowering the blade supporting frame, and

Figure 6 is a sectional view through the adjustable locking bar takensubstantially on a line 6-6 of Figure 4.

Referring now to the drawings in detail, wherein for the purpose ofillustration I have disclosed a preferred embodiment of the invention,the numeral 5 designates the front end of the frame of a conventionalform of road scraper or similar road machine which is mounted on thewheels 6. Fixedly secured to the frame 5 and extending downwardly ateach side thereof, is an arm I to the upper portion of which isjournalled a rock shaft 8 having a pair of forwardly extending arms 9adjacent each end of the shaft 8. To the outer ends of the arms 9 arepivotally attached rods 10 which extend downwardly and to the lower endsof which is secured a transversely extending beam II, the beam beingwelded or otherwise fixedly secured to the lower ends of said rods.

Projecting forwardly from the beam H, adjacent each end thereof, is aguide arm l2 on which the scraper blade I3 is slidably mounted through asleeve I 4 fixed in an opening, l in the blade. The scraper blade ispreferably constructed of a plurality of laminated sections connectedtogether by means of bolts 15. Mounted on the guide arm l2 between thebeam II and the blade I3 is a coil spring I6 yieldably urging the bladeforwardly, the outer end of the guide arm being provided with a nut orhead 11. Projecting rearwardly from the blade l3 adjacent each endthereof, is a guide arm l8 which is slidably mounted at its rear end inthe beam I I, the rear end of the arm [8 having a nut l9 thereon and acoil spring 20 is mounted on the arm between the blade and the beam.

Transversely extending braces 2| connect the two vertical rods l0 andinclined braces 22 are also provided connecting the transverse braces,and the braces are welded or otherwise fixedly secured to the rods.Rearwardly extending braces 23 are also attached to the rods 10, therear ends of the braces having a shoe 24 welded or otherwise securedthereto.

The shoes 24 are of wedge-shape form as i1lustrated to advantageinFigure 5 of the drawings, and are slidably mounted in the verticallyextending guides 25 secured to the lower portion of the arms I by bolts26 or the like.

Rising from the rock shaft 8 is an arm 2'! to the upper end of which ispivotally secured a lever 28 leading to the operators cab of themachine, wherebyvit will be apparent that upon a rearward movement ofthe lever 28 the arms Ill will be. raised upwardly, whereby to bodilyraise the blade. l3. The wedge formation of the shoes 24 in the guides25 compensates for the slight rearward movement necessary for the bladesI3 during the upward swinging movement of the arms 9 whereby to preventbinding of the shoes in the guides.

Projecting rearwardly from the blades l3, adjacent each end thereof, isa pair of spaced cars 29 on which a pin 30 is mounted, the pin providinga pivotal mounting for the front end of a link 3| which extendsrearwardly and has its rear end pivoted as at 32 to the lower end of alever 33 which is pivoted intermediate its ends as at 34 adjacent thelower end of the rods III.

A transversely extending tubular rod 35 is welded or otherwise securedbehind the rods l0 and also supported on the braces 23, the rod 35having a bolt 36 slidably mounted thereon, the bolt being adapted forprojecting outwardly of either end of the tube 35 for engaging behindthe upper end of the lever 33 to retain the lever with its lower endmoved rearwardly whereby to pull the adjacent end of the blade l3 in arearward direction and thus incline the blade toward one side of themachine. The locking bolt 36 is manipulated by means of a lever 31 whichprojects upwardly through a slot 33 formed in the tubular member 35. Theslot 34 includes a longitudinally extending portion 39 along which thelever 31 is movable for projecting the bolt 36 outwardly of either endof the tubular member, and the slot further includes laterally extendingportions 40 at'each end of the longitudinally extending portion andwithin which the lever 31 may be moved for securing the bolt in thedesired position.

The bolt 33 corresponds in length to the tubular member 3550 that onlyone end of the bolt may be projected from said member for lockingvantages and manner of use of the device will be readily understood fromthe foregoing without further detailed explanation.

What I claim is- 1. A road scraper comprising a scraper blade, springmeans projecting the blade forwardly, means for supporting the blade inadvance of a vehicle and means for adjusting either end of the bladeinto a transversely inclined position against the tension of said springmeans.

2. A road scraper comprising a scraper blade, means for supporting theblade in advance of a vehicle and including yieldable means for each endof the blade for projecting the blade forwardly and means for regulatingthe pressure of the blade at either end against the yieldable means toincline the position of the blade.

3. A road scraper comprising a scraper blade, means for slidablysup-porting the blade for movement in a forward or rearward direction onthe front end of a vehicle, spring means yieldably urging the bladeforwardly and means for securing either end of the blade rearwardlyagainst the tension of the springs to maintain the blade in atransversely inclined position.

4. A road scraper comprising a scraper blade, spring means projectingthe blade forwardly, means for supporting the blade in advance of avehicle, means for moving the blade into oppositely inclined transversepositions against the tension of said spring means and means forretaining the blade in its inclined position.

5. A road scraper comprising a scraper blade, spring means projectingthe blade forwardly, means for supporting the blade in advance of avehicle and including guide rods longitudinally of the vehicle on whichthe blade is slidably mounted, means for movin either end of the bladeon said rods to incline the blade against the tension of said springmeans and means for retaining the blade in said inclined position.

6. A road scraper comprising a scraper blade,

I spring means projecting the blade forwardly,

means for supporting the blade in advance of a vehicle and includingguide rods longitudinally of the vehicle on which the blade is slidablymounted, means at each end of the blade for moving the blade into atransversely inclined position against the tension of said spring meansand means selectively engaging either of said last named means forretaining the blade in said inclined position.

'7. A road scraper comprising a scraper blade, spring means projectingthe blade forwardly, means for supporting the blade in advance of avehicle and including guide rods longitudinally of the vehicle on whichthe blade is slidably mounted, means at each end of the blade for movingthe blade into a transversely inclined position against the tension ofsaid spring means and a locking bar selectively engaging either of saidlast named means for retaining the blade in its inclined position.

8. A road scraper comprising a scraper blade, spring means projectingthe blade forwardly, means for supporting the blade in advance of avehicle and including guide rods longitudinally of the vehicle on whichthe blade is slidably mounted, an upwardly extending lever at each endof the blade for moving the same into a transversely inclined positionagainst the tension of said spring means and a transversely disposedslidable locking bar engageable with the levers for retaining the bladein its inclined position.

9. A road scraper comprising a rock shaft journalled transversely of aroad vehicle, arms projecting forwardly from the shaft, a scraper bladesuspended from said arms, means extending rearwardly from the shaft forraising the blade, a channelled guide carried by the vehicle, a braceextending rearwardly from the blade and a wedge-shaped shoe carried bythe brace and slidably mounted in said guide, said shoe being tiltableupon upward movement of the blade to prevent binding of the shoe in theguide.

ANTON KERN, JR.

